4a Instrument Landing System

Question 1

This provides information and guidance for aircraft landing even in adverse weather

Answer 1

Instrument landing system ILS 

Question 2

The ILS consists of three elements (systems) What are they?

Answer 2

Tone localizer, glide slope, marker beacon

Question 3

The tone localizer uses ____ & ____ deviation from runway

Answer 3

Left and right

Question 4

The tone localizer uses what frequency

Answer 4

108.10–111.95 MHz (ODD 1/10th MHz)

Question 5

The tone localizer uses what type of comparison

Answer 5

Amplitude comparison (the principle) 

Question 6

Glide slope uses what UHF frequency

Answer 6

329.15–335 MHz

Question 7

This is paired with LOC channels and provides up/down deviation

Answer 7

Glide slope

Question 8

There are three marker beacons outer, middle, inner.

The outer beacon does what? 

Answer 8

Has a blue light, is activated 4 to 7 miles from the runway, and has a tone of 400 Hz (dashes)

Question 9

The middle beacon is utilized 3500 feet from EOR, uses amber light and has what tone 

Answer 9

1300 Hz (dashes)

Question 10

The inner beacon uses a white light, 1000 feet from EOR, and uses what tone 

Answer 10

3500 Hz . . . . (Dots) 

Question 11

The marker beacon transmits on what frequency

Answer 11

75 MHz

Question 12

There are three ILS components what are they

Answer 12

Control panel, receiver, antennas

Question 13

Where are the marker beacon antennas found

Answer 13

Flush mounted on bottom of the aircraft

Question 14

VOR/LOC share what

Answer 14

An antenna

Question 15

Glide slope and marker Beacon have separate what? 

Answer 15

Antennas